EU referendum: Who are the cabinet ministers most likely to campaign to leave Europe?

Ashley is a digital and data journalist. He is an Online Writer at City A.M., with a particular interest in politics.

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Ashley Kirk

Prime Minister David Cameron hosts the first cabinet meeting with his new cabinet after the General Election (Source: Getty)

David Cameron is facing a split in his party as he attempts to renegotiate Britain's relationship with the European Union.

With a slim majority in the House of Commons, and a referendum battle to face after his negotiations, he may face future rebellion in his own cabinet over the EU.

Some 50 Tory MPs have joined the Conservatives for Britain group in Parliament, campaigning to keep pressure on reform. Its co-chair, Steve Baker MP, has said that he "wouldn't be surprised" if "one or two" cabinet ministers resigned if "we don't get a sovereign Parliament".

Cameron has said that he expects government ministers to follow the party line, so who could be the ministers to resign to campaign for a Brexit?

Iain Duncan Smith - Secretary of state for work and pensions

Smith, a renowned eurosceptic, defied his party under the Major government in order to oppose perceived pro-European policies.

Last year he said the prospects of Britain's continued membership of the EU were "very bleak" if Europe did not embrace reform. He added:

We tend historically, no matter who is in government – Tony Blair or whatever – to make the big noises in Europe because we say it as it is quite often, and don't do all of these behind the scenes deals. The truth is it [the EU] needs at the moment, as the prime minister is doing, to be roughed up a bit about this.

Michael Gove - Secretary of state for justice

Michael Gove addresses party delegates at the 2014 Conservative party conference (Source: Getty)

In 2013, Gove said he would vote to leave the EU if a referendum was held then. He said a Brexit would lead to "certain advantages" for the UK.

The justice secretary has said his party will not be forgiven for "fudging" a referendum, adding it was a "historic opportunity" that must not end in the UK being "steamrolled into a reluctant, strangulated and acquiescent yes" by the EU.

Chris Grayling - Leader of the House of Commons

Chris Grayling delivers a speech at the 2014 Conservative party conference in Birmingham (Source: Getty)

Grayling was the author of the Conservative Party's policy on the European Convention on Human Rights, which recommended leaving the European model in favour of a British Bill of Rights.

As Conservatives, it falls to us to put Britain first, and restore common sense to our human rights framework. As a majority Conservative government, that is just what we would do.

If EU negotiations are modest, the eurosceptic Grayling could wrestle over his conscience, campaigning instead to "put Britain first".

Oliver Letwin - Cabinet minister and policy chief

Oliver Letwin arrives for a cabinet meeting in 2010 (Source: Getty)

Mr Letwin has previously said he wanted to avoid Britain being absorbed into "a United States of Europe", adding that he was "not 100 per cent" sure Cameron could successfully renegotiate Britain's relationship with the EU.

If we can achieve that in negotiations then I shall certainly be supporting remaining within it in the referendum in 2017. We have to have that referendum. We have to put to the British people that question.